Determine the required actuation normal force, in lb, on an annular brake with inside radius of 0.5 inch and outer radius of 3.5 inch to ensure the systems stops from a speed of 800 RPM to rest in 0.8 seconds.
Determine the wear rate and assess if the design is adequate for an average industrial use. Assume a friction coefficient of 0.20 and inertia of 19 lb.ft².